Safety attachment for gas stoves



Dec. 15,1925. I 1,565,740

- w. HANS SAFETY ATTACHMENT FOR GAS STOVES Filed May 15. 1925 FIG. 3. 1 W 6441? I ATM/M 5 Patented 15,

STATES PATENT" OFFICE.

WiLLY' HANS, on NEW Yo-nx, N, Y.

SAFETY, AT'RACI-IMENT .FGR GAS STQVES.

Application filed May 15, 1925.

" specification.

The present invention relates to improvements in gas-stoves, and. more particularly to a safety attachment for the same.

The main object of the invention is to provide a valve-locl ing means, which prevents accidental opening of the valves or cocks associated with the burners of the stove.

Another object of the invention is to pro vide a safety attachment for gas-stoves, which automatically sets the gas cocks to fully closing positions in case they are left accidentally in partly closing positions.

A further object of the invention is to provide a safety attachment of the type mentioned which is simple in construction, efiicient in operation, durable in use and capable of manufacture on. a commercial scale, or in other words, one which is not so difficult to make as to be beyond the reasonable cost of such acontrivance.

With these and other objects in view, which will more fully appear as the nature of the invention is better understood, the same consists in the combination, arrangement and construction of parts hereinafter described, pointed out in the appended claims and illust 'ated in the accompanying drawings, it being understood that many changes may be made in the size and proportion of the several parts and details of construction within the scope of the appended claims, without departing from the spirit or sacrificing any of the advantages of the invention;

One of the many possible embodiments of the invention is illustrated in the accompanying drawings, in which Figure 1 is a top elevation of a portion of a gas-stove, provided with a safety attachment constructed in accordance with the present invention; Fig. 2 is a section taken on line 22 of Fig. 1, on a larger scale; and Fig. 3 is a similar section, some of the elements being shown in other positions.

In the drawings, the numeral 10 indicates the top of an ordinary gas-stove. Below this top is mounted a plurality of gas burn- Serial No. 30,528.

ers 11, each of the same being provided with a gas and air. mixing tube 12. The gas is led to these gasand air mixing tubes from a supply pipe 13 through gas cocks 14-, with each mixing tube 12 being associated a cock independent of the others. Each cock coinprises a shell 15, bored out to receive a conical plug, 16, having a port 17 therein to connect with pipe sections 18 and 19 on the shell. The pipe section 18 is tapped into a supply pipe 13. while the pipe section 19 leads to the respective gas and air mixing tube 12. The plug is provided with a hen dle 20. The several plugs of the stove are arranged in a row and. the said plugs extend vertically, as clearly shown; in the several figures of the drawings. A handle 20, on the other hand, extends horizontally.

Thus far described, the construction and operation. of the elements are well known, so that a further detailed description of the same seems to be unnecessary.

- The safety device comprises rigid strip 21,. preferably, made of sheet metal and having its lower longitudinal edge bent into cylindrical form, as shown at 22. This edge is reinforced by a wire piece 23, disposed within the bent lower longitudinal edge of the strip. The strip is placed upon the pipe sections 18 of the cocks and is connected, in manner hereinafter to he described, with arod 24-, positioned below the pipe sections 19 of the several cocks. The strip 21 and the rod 24 extend in parallel relation to the supply pipe 13, the rod 24 being disposed between the shells 15 of the several cocks and the gas and air mixing tubes 12, and the strip 21 being disposed between the said shells and the supply pipe 18. he connection between the rod 24.- and the strip 21 is made by a plurality of spring coils 25. One end of each coil is attached to the strip 21 adjacent the lower longitudinal edge of the latter. is then carried around the rod 2% and the other end attached to the strip 21 adjacent the upper longitudinal edge of the latter.

A locking device is provided for preventing movement of the strip 21 in relation to the rod 2 1. This locking device may be of anysuitable construction. In the case illustrated it comprises a detent 26, which is pivotally mounted on the rod 2s. The free end of the detent is hook-shaped, as shown at 27, for engagement with the upper longi-- tudinal edge of the strip 21.

When the plugs of the several cocks are in closing positions, as shown in Fig. 1 of the drawings, the handles 20 thereof extend in parallel relation to the supply pipe 13, as clearly shown in Figs. 1 and 2 of the drawings. The strip 21 bears against the said handles, the springs 25 preventing accidental shifting of the plugs toward opening positions. In order to prevent the plugs to be shifted toward opening positions by children, the detent is en aged with the strip 21, as shown in Figs. 1 and 2 of the drawings. If it is intended to supply gas to the burners, first the detent must be disengaged from the strip 21. When thereafter anyone of the plugs is shifted toward opening position, the handle thereof causes a strip 21 to move in the direction of the arrow shown in Fig. 2 of the drawings, the elements occupying the positions shown in Fig. 3 of the drawings when one of the cooks is in its fully open position. As the strip moves into the position shown in Fig. 3 of the drawings, the springs 25 are placed under tension, so that, when the plug is moved toward closing position, the strip 21 will move accordingly. Should a cock be left partially open, the strip 21, under the action of its springs 25, shifts the plug into fully closing position.

What I claim is 1. A gas-stove including a gas supply pipe, a plurality of independent gas-cocks connected to said pipes, each cock comprising a shell, a plug oscillatable in the shell provided with a handle, a pipe section on each shell tapped into said supply pipe, and a pipe section on the opposite side of each shell, a rigid strip placed on top of the pipe sections connecting said shellswith said supply pipe, said strip being adapted to bear adjacent its upper longitudinal edge against the handles of said plugs, a rod placed below the other set of pipe sections, a plurality of springs attached at one of their ends to said strip adjacent the lower longitudinal edge of the latter and at their other ends adjacent the upper longitudinal edge 01 said strip,'said springs being carried around said rod, and a detent pivotally mounted upon said rod and provided with a hook-shaped free end adapted to engage said strip.

2. A gas-stove including a gas supply pipe, a plurality of independent gas-cocks connected to said pipes, each cock comprising a shell, a plug oscillatable in the shell provided with a handle, a pipe section on each shell tapped into said supply pipe, and a pipe section on the opposite side of each shell, a rigid strip placed on top of the pipe sections connecting said shells with said supply pipe, said strip being adapted to bear adjacent its upper longitudinal edge against the handles of said plugs, a rod placed below the other set of pipe sections, a plurality of springs attached at one of their ends to said strip adjacent the lower longitudinal edge of the latter and at their other ends adjacent the upper longitudinal edge of said strip, said springs being carried around said rod, and means mounted upon said rod for engagement with said strip to prevent movement of the latter in relation to said rod.

Signed at New York, in the county of New York, and State of New York, this 6th day of May, A. D. 1925.

WILLY HANS. 

